Copyright © 2007 Atmel Corporation
The Watchdog Timer (WDT) has a prescaler generating a timeout period. This prescaler is clocked from the RC oscillator. The watchdog timer must be periodically reset by software within the timeout period, otherwise, the device is reset and starts executing from the boot vector. This allows the device to recover from a condition that has caused the system to be unstable.
The driver is composed of wdt.c and wdt.h dedicated for module revision below 400.
One example is available: start a watchdog and scroll leds until a reset occurs..
The driver is composed of wdt4.c and wdt4.h dedicated for module revision above 400.
One example is available: start a watchdog and scroll leds until a reset occurs..